Kalibrierverfahren und kalibriersystem

Abstract

A calibration method of calibrating a test instrument (12) is described. The test instrument (12) comprises at least one port (14, 16), at least one signal analysis module (20), and at least one signal generator module (18). The at least one signal analysis module (20) and the at least one signal generator module (18) are each connected to the at least one port (14, 16). The calibration method comprises the steps of: - consecutively connecting a set of calibration standards to the at least one port (14, 16) and performing a calibration measurement for each calibration standard (34, 36, 38) connected, thereby obtaining a first set of measurement data; - determining, based on a multi-port error model and the first set of measurement data, a plurality of error terms of the multi-port error model, wherein at least one of the error terms comprises a product of two error parameters; - connecting an additional calibration standard (40) to the at least one port (14, 16); - performing a calibration measurement with the additional calibration standard (40) connected, thereby obtaining a second set of measurement data; and - determining the two error parameters based on the second set of measurement data. Further, a calibration system (10) is described.